How is a switch elected as a root bridge for spanning tree if the bridge priorities are

How is a switch elected as a root bridge for spanning tree if the bridge priorities are the same?
A)The switch with the lowest IP address will become the root bridge.
B)The switch with the lowest MAC address will become the root bridge.
C)The switch with the highest MAC address will become the root bridge.
D) The switch with the highest IP address will become the root bridge.